#9 pyParallel virtual mode needed

[Richard Cooke]

To test software for equipment attached to the LPT
port, we need a 'virtual' port mode that just quietly
logs to a file all traffic. And maybe maintains
internal values for the registers, and a 'track log' so
tests can easily check-up on sequences.

I don't want to monkey with my code to switch between
real and simulations. So I want either a INIT flag to
indicate simulation mode, or an options list.

[Chris Liechti]

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i will not implement a simulation mode based on a flag to __init__. if i'd provide a simulation or mock object it would be a separate class. hey there is even some code for a start. see VirtualParallelPort in parallelutil.py.